2019 Volume 44 Issue 2 Pages 262-268
A 33-year-old woman with recurrent lower abdominal pain related to her menstrual cycles consulted a local doctor for infertility treatment. Abdominal computed tomography revealed a tumor in the sigmoid colon, and she was referred to our hospital for evaluation. Histopathological examination of an endoscopic ultrasound-guided fine needle aspiration biopsy revealed endometrial glands and stroma within the sigmoid colon. We made the clinical diagnosis of endometriosis of the sigmoid colon, and performed laparoscopic surgery. The operative findings showed several blueberry spots on the surface of the pelvic wall. We ablated most of the blueberry spots and removed a chocolate cyst from the right ovary. Macroscopic examination of the resected specimen revealed stenosis with adhesion and bending by the mass-forming endometriosis was seen at the sigmoid colon. A partial sigmoidectomy was performed. A histopathological examination revealed endometrial glands and stroma from the submucosa to the subserosa of the sigmoid colon.
